Answer:
General Formulas and Concepts:
<u>Pre-Algebra</u>
- Order of Operations: BPEMDAS
<u>Algebra I</u>
- Standard Form: ax² + bx + c = 0
- Quadratic Formula:
<u>Algebra II</u>
- Imaginary Roots: √-1 = i
- Standard Form: a + bi
Step-by-step explanation:
<u>Step 1: Define</u>
-4x² - 4x - 9 = 0
a = -4
b = -4
c = -9
<u>Step 2: Find roots</u>
- Substitute:
- Exponents:
- Multiply:
- Subtract:
- Factor:
- Simplify:
- Factor:
- Divide:
- Expand:
- Simplify:
- Evaluate:
The measure of <span>∠</span>2 is 146°
Answer:
75 ft / none of these (43)
Step-by-step explanation:
formula: (area =1/2bh)
so you take base × height and then take half of that number (divide by 2)
Answer:
bmjbn
Step-by-step explanation:
Answer:
y = -x
Step-by-step explanation:
The line has a slope of -1 and it passes through point (0,0)
Taking another point (x,y) on the line;
Slope = change in y ÷ change in x
For our case; slope =
Cross multiplying this gives;
y = -x